Paul Burrell says Meghan Markle wouldn't have been given any preparation for marrying into the Royal Family.
He tells Yahoo UK's 'The Royal Box:' "Would you believe there is no rule book, there is no etiquette lesson, there are no advisors. Nobody prepares people coming into the Royal Family. I think that’s where it’s gone wrong in the past. Not even Diana was given tuition into entering the Royal Family."
The only thing Meghan may have to be careful with in future is not to express her views or beliefs when it comes to issues that err on the side of being political, according to Burrell.
He says: “What comes with maturity is a set of beliefs and they don’t always sit well with the Royal Family. She [Meghan] has to toe the party line.”

The Sussexes have officially split away from their joint The Royal Foundation with the Cambridges, so what does this mean for the future? CNN’s royal commentator Victoria Arbiter, royal author Phil Dampier and PR expert Nick Ede discuss the pros and cons with host Kate Thornton.
They also discuss the recent royal family get-togethers at Trooping the Colour, Garter day and Ascot and whether these ceremonial traditions will continue in future when Charles and then William are king.
Victoria Arbiter, speaking from a US perspective, gives her take on what Americans think of the Royal Family.
Elsewhere, Yahoo UK’s royal correspondent Danielle Stacey speaks to Princess Diana’s former butler Paul Burrell.
Before working for Diana, Mr Burrell was a footman for the Queen. He tells some of his favourite anecdotes about Her Majesty, including their flight on Concorde and how she’s a great mimic.
He also reveals that Meghan Markle wouldn’t have been given any formal preparation for joining the Royal Family.

Yahoo UK’s royal correspondent Danielle Stacey speaks to Princess Diana’s former butler Paul Burrell.
Before working for Diana, Mr Burrell was a footman for the Queen. He tells some of his favourite anecdotes about Her Majesty, including their flight on Concorde and how she’s a great mimic.
He also reveals that Meghan Markle wouldn’t have been given any formal preparation for joining the Royal Family.